<!DOCTYPE html>
<html lang="en">

<head>
  <meta charset="UTF-8">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>Document</title>
  <style>
    table,
    th,
    td {
      border: 1px solid #000;
      border-collapse: collapse;
      padding: 5px;
    }

    table {
      width: 600px;
      text-align: center;
      margin: auto;
    }

    caption {
      font-weight: 700;
    }

    th {
      background-color: #ededef;
    }

    tr:hover {
      background-color: #ededef;
    }
  </style>
</head>

<body>
  <table>
    <caption>学生列表</caption>
    <tr>
      <th>序号</th>
      <th>姓名</th>
      <th>年龄</th>
      <th>性别</th>
      <th>家乡</th>
    </tr>

    <script>
      let students = [
        { name: '小明', age: 18, gender: '男', hometown: '河北省' },
        { name: '小红', age: 19, gender: '女', hometown: '河南省' },
        { name: '小刚', age: 17, gender: '男', hometown: ' 山西省' },
        { name: '小丽', age: 18, gender: '女', hometown: ' 山东省' }
      ]
      for (let i = 0; i < students.length; i++) {
        let obj = students[i]
        document.write(`
          <tr>
      <td>${i + 1}</td>
      <td>${obj.name}</td>
      <td>${obj.age}</td>
      <td>${obj.gender}</td>
      <td>${obj.hometown}</td>
    </tr>
          `)
      }

      // let arr = [1,2,3,4]
      // arr[0]

      // let students[0]=      {
      //   name: '小明',
      //    age: 18,
      //     gender: '男',
      //      hometown: '河北省'
      //     }
    </script>
  </table>
</body>

</html>